检索结果-南通市图书馆

Effects of torrefied wood chip and vermicompost application on vegetation growth and nutrient uptake in the Saemangeum reclaimed land

引用

Ecological Processes 2020年第1期9卷 74-82页

作者： Aung Aung Jeong Min Seo Si Ho Han Ji Young An huong thi thuy dao Woo Bin Youn Byung Bae Park Department of Environment and Forest Resources College of Agriculture and Life SciencesChungnam National University99 Daehak-roYuseong-guDaejeon 34134Republic of Korea Environmental Conservation Department Ministry of Natural Resources and Environmental ConservationNaypyitaw 15011Myanmar Institute of Agricultural Science College of Agriculture and Life SciencesChungnam National University99 Daehak-roYuseong-guDaejeon 34134Republic of Korea.

Background:In reclaimed land,the growth environment for plants may be unfavorable and the initial establishment and growth of seedlings could be limited because of low nutrient and water *** and control of understory vegetation that competes with seedlings may be of help in ameliorating soil physical and chemical properties,resulting in better seedling growth and reclamation ***,the amount of nutrients understory vegetation absorbs in this ecological process has been rarely ***,we aimed to investigate the effect of soil amendment on biomass production and nutrient uptake by weeds in the nutrient-poor reclaimed *** applied three levels of torrefied wood chip(TWC;0,2.5,and 5 Mg ha^(−1))and two levels of vermicompost(VC;0 and 2.7 Mg ha^(−1))as soil physical improvements and organic soil amendments in reclaimed land in the Republic of Korea,with Populus euramericana used as the crop ***:TWC did not influence weed biomass,but 2.7 Mg ha^(−1) VC significantly increased weed biomass by 21%compared to 0 Mg ha^(−1) VC ***(N),phosphorus(P),potassium(K),calcium(Ca),magnesium(Mg),and sodium(Na)concentrations in weeds were the highest in control,but there was no statistical difference among ***,VC treatment did marginally increase nutrient uptake in weeds,especially P,K,Ca,and *** treatments influenced crop tree ***:We conclude that VC can be used as an organic source of nutrients in reclaimed soil and that weed management is necessary to increase treatment effects on crop trees in this salt-affected reclaimed land.

关键词： Nutrient content Populus euramericana Saemangeum Soil amendment Weed biomass

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Comparison of litterfall production in three forest types in Jeju Island, South Korea

引用

Journal of Forestry Research 2020年第3期31卷 945-952页

作者： Ji Young An Si Ho Han Woo Bin Youn Sang Ick Lee Afroja Rahman huong thi thuy dao Jeong Min Seo Aung Aung Hyung-Soon Choi Hwa Ja Hyun Byung Bae Park Department of Natural Resources Kyoto UniversityKyoto 606-8502Japan Department of Environment and Forest Resources Chungnam National UniversityDaejeon 34134Republic of Korea Forest Environment Conservation Division Korea Forest ServiceDaejeon 35208Republic of Korea Forest Conservation Department National Institute of Forest ScienceSeoul 02455Republic of Korea Warm Temperate and Subtropical Forest Research Center National Institute of Forest ScienceSeogwipo 63582Republic of Korea

Litterfall, which is influenced by physical and biological factors, is a major pathway for carbon and nutrient cycling in forest ecosystems. The purpose of this study was to investigate monthly litterfall production in three forests in Jeju Island differentiated by forest composition and precipitation: Cheongsu(Quercus glauca as the dominant species;low precipitation), Seonheulb(Q. glauca as the dominant species;high precipitation), and Seonheulm(Q. glauca and Pinus thunbergii as the dominant species;high precipitation). Litterfall was collected monthly from April to December 2015 and divided into leaf litter, twig, bark, seeds, and unidentified *** patterns of litterfall production varied across stands according to their species composition. However,the amount of leaf litterfall and total litterfall were comparable among stands, ranging from 362 to 375 g m-2 for leaf litter and 524 g m-2 to 580 g m-2 for total *** leaf litter in May was the highest in all stands, while needle litter was the highest in December in *** twig litterfall in July may be attributable to high rainfall with strong winds and storms during the rainy season. Although forest type and climate factor had no influence on litterfall amounts in this study, the pattern of litterfall production was species dependent, suggesting diverse effects on carbon and nutrient cycling in these forests.

关键词： Coniferous forest Evergreen broadleaved forest Gotjawal Leaf litter Precipitation Temperature

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Emotion Recognition with Capsule Neural Network

引用

Computer Systems Science & Engineering 2022年第6期41卷 1083-1098页

作者： Loan Trinh Van Quang H.Nguyen thuy dao thi Le School of Information and Communication Technology Hanoi University of Science and TechnologyHanoi10000Vietnam Faculty of Information Technology University of Transport and CommunicationsHanoi10000Vietnam

For human-machine communication to be as effective as human-tohuman communication, research on speech emotion recognition is *** the models and the classifiers used to recognize emotions, neural networks appear to be promising due to the network’s ability to learn and the diversity in configuration. Following the convolutional neural network, a capsuleneural network (CapsNet) with inputs and outputs that are not scalar quantitiesbut vectors allows the network to determine the part-whole relationships thatare specific 6 for an object. this paper performs speech emotion recognition basedon CapsNet. The corpora for speech emotion recognition have been augmented byadding white noise and changing voices. The feature parameters of the recognition system input are mel spectrum images along with the characteristics of thesound source, vocal tract and prosody. For the German emotional corpus EMODB, the average accuracy score for 4 emotions, neutral, boredom, anger and happiness, is 99.69%. For Vietnamese emotional corpus BKEmo, this score is94.23% for 4 emotions, neutral, sadness, anger and happiness. The accuracy scoreis highest when combining all the above feature parameters, and this scoreincreases significantly when combining mel spectrum images with the featuresdirectly related to the fundamental frequency.

关键词： Emotion recognition CapsNet data augmentation mel spectrum image fundamental frequency

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

In vivo anticancer activity of maesopsin 4—O— β—glucoside isolated from leaves of Artocarpus tonkinensis *** Gagnep

引用

Asian Pacific Journal of Tropical Medicine 2016年第4期9卷 343-348页

作者： Trinh thi thuy dao Duc thien Tran Quang Hung Nguyen Thanh Tam Nguyen thi Hoang Anh Nguyen thi Nga Nguyen thi Cuc Le Phuong Mai Tran Van Sung Domenico V.Delfino Do thi Thao Institute of Chemistry.Vietnam Academy of Science and Technology Institute of Biotechnology Vietnam Academy of Science and Technology National Research Council Canada Measurement Science and Standards1200 Montreal RoadBuilding M-12.Ottatca.Ontario KIA OR6 Department of Medicine University of PerugiaPiazzale Gambuli.S.Andrea delle Fratte

Objective:To investigate the antitumor effect of maesopsin 4-O-β-glucoside(TAT2) isolated from the leaves of Artocarpus tonkinensis(***) *** ***:The antitumor activity of TAT2 was evaluated in Lewis lung carcinoma(LLC) tumor-bearing ***/c mice had tumors induced by implantation with 2× 10~6 LLC cells into the subcutaneous right posterior ***-bearing mice were treated orally with a range of doses of TAT2 and a standard drug,*** were observed for tumor growth and mortality *** was collected to determine hematological and biochemical *** TAT2 was isolated from an ethanolic extract of *** *** structure was determined by MS and NMR spectroscopy,and identified as *** compound did not show acute toxicity at the highest dose tested(2 OIK) mg/kg body weight).TAT2 exhibited antitumor activity by decreasing tumor growth,increasing the survival rale,and ameliorating some hematological and biochemical parameters at doses of 100 and 200 mg/kg body weight(P<0.05).Conclusions:These results indicate that TAT2 possesses clear antitumor *** to its bioavailability and low toxicity,and the fact that it could be isolated in a large scale from *** leaves,the compound shows promise as a potential anticancer drug.

关键词： Artocarpus tonkinensis BALB/c Hematological parameters Lewis lung carcinoma Maesopsin 4-0-β-glucoside

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of heating time on structural,morphology,optical,and photocatalytic properties of g-C3N4 nanosheets

引用

Chinese Physics B 2020年第5期29卷 504-508页

作者： Nguyen Manh Hung Le thi Mai Oanh Lam thi Hang Pham Do Chung Pham thi Duyen dao Viet Thang Nguyen Van Minh Center for Nano Science and Technology Hanoi National University of Education136 Xuan Thuy RoadCau Giay DistrictHanoi100000Vietnam Department of Physics Hanoi National University of Education136 Xuan Thuy RoadCau Giay DistrictHanoi100000Vietnam Faculty of Basic Sciences Hanoi University of Natural Resources and Environment41A Phu Dien RoadNorth Tu LiemHanoi100000Vietnam Hanoi University of Mining and Geology Duc Thang wardNorth Tu Liem DistrictHanoi100000Vietnam Military science Academy 322 Le Trong Tan streetDinh CongHoang MaiHanoi100000Vietnam

Effect of heating time on the structural,morphology,optical,and photocatalytic properties of graphitic carbon nitride(g-C3N4)nanosheets prepared at 550℃in Ar atmosphere is *** investigations are carried out by using x-ray diffraction(XRD),scanning electron microscopy(SEM),Fourier-transform infrared spectroscopy(FTIR),UV-vis absorption,and photoluminescence(PL).At a heating temperature of 550℃,g-C3N4 nanocrystals are formed after 0.5 h and become more orderly as the heating time *** surface area of the g-C3N4 nanosheets significantly increases as the preparation time *** g-C3N4 prepared in 2.5 h shows the highest photocatalytic performance,decomposing completely 10 ppm RhB solution under xenon lamp irradiation for 2.0 h.

关键词： nanosheets photocatalytic heating time Ar atmosphere

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于平衡计分卡的越南投资发展银行绩效考核体系优化研究

基于平衡计分卡的越南投资发展银行绩效考核体系优化研究

引用

作者： dao thi MINH thuy 北京交通大学

学位级别：硕士

越南经济快速发展,越南投资发展银行作为越南发展最好的银行之一在金融体系中地位稳固。但是,同时可以看到的是越南的金融业发展环境逐渐开放,竞争进一步加强,要求银行不断创新管理理念,提升管理水平,增强自身的竞争力。越南投资银行原... 详细信息

越南经济快速发展,越南投资发展银行作为越南发展最好的银行之一在金融体系中地位稳固。但是,同时可以看到的是越南的金融业发展环境逐渐开放,竞争进一步加强,要求银行不断创新管理理念,提升管理水平,增强自身的竞争力。越南投资银行原来的绩效考核体系已经难以完成这一目标。平衡计分法可以改变当前越南投资银行在绩效考核中单一偏向财务指标的问题,可以通过财务指标和非财务指标进行平衡考核,并且对于有利于银行更长远发展的一些指标进行考察,有助于银行的可持续性发展以及战略目标的实现。本文从越南金融业出发,选择了具体的案例银行—越南投资发展银行进行案例分析。笔者通过对该银行实地考察,具体分析越南投资银行绩效考核现状以及内外部的环境和影响因素,然后在理论指导下结合实际专门为越南投资进行进行平衡计分法的绩效考核体系的设计。论文的主要内容就是对越南投资发展银行绩效考核分析的基础上结合平衡计分法设计新的绩效考核体系。首先,阐述本文研究的相关理论,并且对现在中国在银行业中应用平衡计分法绩效考核的相关的研究成果进行综述。其次,对越南投资发展银行概况以及绩效考核体系现状进行分析,最后总结了当前绩效考核体系中存在的不足以及造成这些问题的四个方面的原因。第三,在平衡计分法理论基础上对于越南投资发展银行的绩效考核体系的创新设计的可行性和必要性进行分析,并且提出了新的绩效考核方案的原则、流程以及具体的方案。最后,在初步制定了越南投资银行平衡计分法在银行、部门、员工三个层面的绩效考核方案之后,进一步为了保障绩效考核方案可以达到其预想的效果,提出了多方面的保障措施。本文在研究中主要根据平衡计分法的四个层面结合越南投资发展银行的发展实际来确定银行绩效考核方案,不仅可以让银行员工通过新的绩效考核获得激励,有更好的工作积极性,而且通过改善后的绩效考核方案提升越南投资发展银行的管理水平,可以对银行招纳人才有更好的条件,最终将对于越南投资银行的战略目标的实现有更好的推动作用。

关键词：商业银行竞争力平衡计分卡绩效管理战略目标

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Study on Extraction and Conversion Annatto （Bixa orellana L.） Color into Norbixin to Prepare Food Grade Water-Soluble Norbixin Powder

引用

Journal of Life Sciences 2017年第2期11卷 97-104页

作者： Tran thi Ha dao Phan Thoai Le thi Thu thuy Phan The Dong The Department of Food- Environment & Nursing Dong Nai Technology University Dong Nai 810000 Viet Nam The Faculty of Science & Engineering Hoa Sen University Ho Chi Minh 700000 Viet Nam

Response surface methodology was used in this research to optimize the technical parameters of the extraction and conversion color compound in armatto seeds into norbixin. Parameters affected the extraction efficiency and norbixin recovery yield were solvent concentration, rate of solvent/seed, incubation time, and incubation temperature. The optimization results including： concentration of ethanol is 51.82°; concentration of NaOH is 0.52 M; ratio of solvent/seed is 7.1/1; incubation time is 33.12 minutes, incubation temperature is 58.6℃, and the rate of 36% HCl/color solution is 0.5/5 （v/v）.

关键词： Achiote Bixa orellana L. bixin norbixin extraction conversion food color.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Music Genre Classification Using DenseNet and Data Augmentation

引用

Computer Systems Science & Engineering 2023年第10期47卷 657-674页

作者： dao thi Le thuy Trinh Van Loan Chu Ba Thanh Nguyen Hieu Cuong Faculty of Information Technology University of Transport and CommunicationsHanoi100000Vietnam School of Information and Communication Technology Hanoi University of Science and TechnologyHanoi100000Vietnam Faculty of Information Technology University of Technology and Education Hung Yen160000Vietnam

It can be said that the automatic classification of musical genres plays a very important role in the current digital technology world in which the creation,distribution,and enjoyment of musical works have undergone huge *** the number ofmusic products increases daily and themusic genres are extremely rich,storing,classifying,and searching these works manually becomes difficult,if not *** classification ofmusical genres will contribute to making this *** research presented in this paper proposes an appropriate deep learning model along with an effective data augmentation method to achieve high classification accuracy for music genre classification using Small Free Music Archive(FMA)data *** Small FMA,it is more efficient to augment the data by generating an echo rather than pitch *** research results show that the DenseNet121 model and data augmentation methods,such as noise addition and echo generation,have a classification accuracy of 98.97%for the Small FMA data set,while this data set lowered the sampling frequency to 16000 *** classification accuracy of this study outperforms that of the majority of the previous results on the same Small FMA data set.

关键词： Music genre classification Small FMA DenseNet CNN GRU data augmentation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

越南民族文化出版社管理制度转型研究（2004-2013）

越南民族文化出版社管理制度转型研究（2004-2013）

引用

作者：陶青翠（dao THANH thuy）华东师范大学

学位级别：硕士

出版工作属于越南文化与思想领域的活动,为越南人民美好的道德、人格与生活方式的建设作出贡献,并促进了与国际的经济与文化交流。出版管理制度是政府根据出版领域的固有关系而制订的各种符合经济规律及社会体制特征的规范性管理方式。... 详细信息

出版工作属于越南文化与思想领域的活动,为越南人民美好的道德、人格与生活方式的建设作出贡献,并促进了与国际的经济与文化交流。出版管理制度是政府根据出版领域的固有关系而制订的各种符合经济规律及社会体制特征的规范性管理方式。然而,越南出版管理体制在运行过程中显露出许多不足,尚未适应国家改革的实践要求。因此,出版管理制度转型势在必行,这既符合越南出版业自身历史发展的进程,也切合越南宏观的国内外社会环境的发展需要。民族文化出版社2004年以来民族文化出版社出版管理制度的改革极具典型性,可以作为近年来越南出版管理体制整体转型的一个缩影。本文以个案研究为出发点,实证分析越南民族文化出版社管理制度转型的原因、方法、效果及相关问题,旨在对越南出版业的管理制度转型有一个精准的把握。本文的论述主要分为四个章节。第一章扼要介绍越南出版业的发展历程以及2004年前后出版管理制度转型的背景,从宏观上分析越南的出版现状及出版管理制度需要转型的原因。第二章转入对研究对象——民族文化出版社历史背景的介绍,着重分析该出版社2004年前管理制度的实际状况,面临的内部与外部(国家的/国际的)挑战等问题。第三章详细分析2004年以来越南民族文化出版社进行管理制转变的具体内容与方法,并从出版社本身与读者反应两个角度验证其转型后的成效。第四章阐述越南民族文化出版社管理制度在初步转变之后仍然存在不少问题与不足,对今后该社进一步提升管理效率提出自己的一些思考。全文论述过程中,主要采取文献分析法,并辅以实地调查,试图从影响民族文化出版社管理制度转型的各种产业环境因素出发,全面把握其管理制度转型的内容及效果。

关键词：越南民族文化出版社管理体制转型

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：